Flight simulator robust control based on disturbance observer

Flight Simulator is a typical high performance servo control system. Parameter perturbation and external disturbances are the major obstacles for performance improvement. Disturbance Observer (DOB) is a simple and effective way to solve these problems. DOB based on velocity loop is proposed in this paper, and the influence of filter order on system performance is also analyzed. Experiments on a single-axis flight simulator show that the control strategy based on DOB can effectively suppress disturbance and significantly improve system performance, moreover, with a simpler algorithm, it´s easier to compliment.